Can't bake Cycles material to texture - "no active image in materials slot" or bake doesn't work?
Guessing a bit, but for this to work, you need to have an active (i.e. selected) Image texture node in the node editor. Did you remember to select it (make it active) before hitting Bake?

Also: I see you have selected multiple passes to bake. I think you need separate textures for each. (Select an image in the texture node, make sure it is still active, select a Bake type, hit Bake.)